Straightening Kit | Keratin GoldenHair | without formaldehyde

The best treatment of 2025

Straightening Kit | Keratin GoldenHair | without formaldehyde
Straightening Kit | Keratin GoldenHair | without formaldehyde
Straightening Kit | Keratin GoldenHair | without formaldehyde
Straightening Kit | Keratin GoldenHair | without formaldehyde
Straightening Kit | Keratin GoldenHair | without formaldehyde

Impressive 👏👏
I love this one! It really works. Just follow the instructions. ❤

Eva Hernando

I've been using it for years and I'm extremely happy with it; this is my third time buying it. It's a product that truly does what it says.

Look Clau

Nice to meet you
I did it for my cousin and I really liked the result

Vanessa

Good product
It leaves my hair moisturized with a nice shine and that's it, I love it.

Viviana Dagua

It works very well.
If you use it correctly it works very well, it leaves your hair smooth and perfect.

Karmen

Straightening Kit | Keratin GoldenHair | without formaldehyde

The best treatment of 2025

Specially designed for: ALL HAIR TYPES (NATURAL, DYED, BLEACHED)
What does the kit contain ?
1 Gold Diamond Moroccan Wax
1 Pre-treatment Shampoo
+ Instruction manual
90% of the success of this product is in good application.

WARRANTY:

We'll straighten it or give you your money back.

Professional hair straightening at home

Formaldehyde-free and free of harsh chemicals

Results up to 12 weeks

Suitable for all hair types

Duration: up to 12 weeks

-20% off if you buy 2 kits of 500ml
€79.98
Paga a plazos con Método de pago
€99.98
Paga a plazos con Método de pago

Quantity and size

Shipping throughout Spain in 24-48 hours

We'll straighten it or give you your money back.

Used by professional stylists

What does the kit include?

Everything you need for professional hair straightening at home , in one pack:

✅ Instruction Manual
We explain the step-by-step process so you can apply the treatment without worries.

✅ Pre-Treatment Shampoo (250ml)
It deeply cleanses the hair, opening the cuticle for better absorption of the treatment.

✅ GoldenHair Keratin Smoothing Treatment (250ml)
With keratin, natural oils and anti-frizz technology for smooth, shiny and healthy hair.

📦 Optional: The kit may come in different volumes (ideal for 1, 2 or several applications, depending on the length of the hair).

Why didn't my hair straightening treatment work or why didn't it turn out well?

In 99% of cases, straightening fails because the right iron was not used or the correct temperature was not used .


For the product to activate and seal correctly, it is ESSENTIAL to use:

✅ Iron with 100% TITANIUM plates (not ceramic, not tourmaline, not coated)
✅ Minimum temperature of 230°C (450°F) — always at MAXIMUM power


⚡ If you use our Lizze Extreme iron, it should be set to 250°C

If the temperature is low or the straightener is not titanium, the product will not seal and the hair will not be straight , even if you have done the rest of the process correctly.

How do I use it?

Transform your hair at home in less than 90 minutes!

Step 1: Wash your hair
Use the pre-treatment shampoo to remove residue and open the cuticle. Towel dry.

Step 2: Apply the treatment
Divide the hair into sections and apply the product with a brush, from roots to ends. Leave on for 30–60 minutes (depending on hair type).

Step 3: Dry and iron
Dry your hair completely with a hairdryer. Then, straighten it at 200–230 °C, passing it over each section 10–15 times to seal the keratin.

Step 4: Rinse and enjoy
Wash your hair after 24 to 48 hours with sulfate-free shampoo. Enjoy long-lasting, shiny, and frizz-free straightening.

Benefits

✔️ Smooth, frizz-free hair for up to 12 weeks
✔️ Mirror shine and smoothness from the first application
✔️ Reduces volume and makes daily styling easier
✔️ Suitable for all hair types : dyed, curly, wavy or damaged
✔️ Formaldehyde-free – 100% safe treatment
✔️ Professional results at home without spending money at the hairdresser
✔️ With nourishing oils that repair and strengthen
✔️ No harsh ingredients – does not damage hair

Main ingredients

✨ Hydrolyzed keratin – Strengthens, repairs and smooths the hair fiber.

🌰 Argan and macadamia oil – Deeply nourish and give intense shine.

🌿 Green tea extract and plant proteins – Antioxidant protection and natural softness.

🚫 Formaldehyde-free / Paraben-free / Harsh sulfate-free

Notice to customers in the United States

The customs charge (approximately $54) that some orders receive is not applied by our company, but by US Customs and Border Protection due to a legal change effective September 2025 that eliminates the de minimis exemption for imports. This duty is mandatory and beyond our control. Thank you for your understanding.

How long does the treatment last?

Buy with confidence: straight hair or your money back.

Say goodbye to frizz for up to 12 weeks with just one application of the GoldenHair Keratin Smoothing Kit .

This professional treatment, formaldehyde-free and suitable for all hair types , transforms your hair from the first application.

With a simple and safe routine, you'll achieve natural straightening, mirror shine , and irresistible softness , all without having to go to the salon.

🧴 Treatment duration:

  • Intensive straightening: 8 to 12 weeks
  • Deep hydration: up to 3 months

💡 Ideal for those looking for:

  • Save time every morning
  • Eliminate frizz and unwanted volume
  • Visible results from the first application

👉 With our Smoothing Kit, you only need one afternoon to completely renew the health and appearance of your hair.

You're going to miss out!

The units are flying off the shelves... and you still don't have one.

It's now or never. When you come back, it might not be available anymore.

Results or refund

Guaranteed trust

Natural shine

Lasting softness

Formaldehyde-free

Healthy hair

Hair hydration

Professional straightening

Natural shine

Lasting softness

Healthy hair

Hair hydration

Formaldehyde-free

Professional straightening

Step by step

1

Wash your hair

Wash your hair with the shampoo from the kit (without conditioner) to remove residue and open the cuticle. Dry until 80% dry with a towel or hairdryer.

2

Apply the treatment

Divide the hair into sections and apply the product evenly from roots to ends with a brush. Leave on for 50–60 minutes.

3

Dry and iron

Dry your hair completely with a hairdryer. Then straighten strand by strand using a flat iron with 100% titanium plates, at a temperature between 210°C and 230°C (depending on hair type), to properly seal the keratin.

4

Enjoy the result

Wash your hair thoroughly with plenty of water. And get ready to enjoy silky, shiny, and frizz-free straight hair for weeks!

Why choose our straightening kit?

Compare for yourself what our professional treatment offers versus other options on the market.

Smoothing kit

Others

Formaldehyde-free formula

Professional results at home

Long-lasting straightening (up to 12 weeks)

Deep hydration and shine

Suitable for all hair types

Let our customers speak for us

Customer Reviews

Based on 58 reviews
72%
(42)
19%
(11)
7%
(4)
2%
(1)
0%
(0)
100.0
100.0
T
Tamara

Encantada con los productos. Me dura muchos meses el alisado y sin maltratarlo. Me queda súper sedoso, suave y brillante! Son mi salvación en España!

A
Ayris Magdalena
Es util

Ase su funsion pero por yo pienso q tiene formon pica mucho así q le recomie do dejarla una hora o más y luego dacarla antes de secar el pelo

M
Me quedan perfectas estoy muy contenta con la compra
Belleza

Maravilloso aunque pica un poco al secar el pelo pica los ojos resultados de pelo maravilloso

V
Viviana Dagua Wilches número de
Buen producto

Me dejo el pelo hidratado con buen brillo y listo, me encanta.

h
harry rosendo
Regular

He comprado mejores

123

Boost your straightening with these essentials

Do you want your straightening treatment to last longer and look even more spectacular?

Complete your routine with our recommended products and get salon-quality results for longer.

Perfect hair also needs perfect maintenance!

  • Daily use

  • After the Straightening

  • Other Kits

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Frequent questions

How does this straightening treatment differ from other formaldehyde treatments?

Unlike formaldehyde treatments that can burn hair or irritate the scalp, this kit is 100% free of formaldehyde and harsh chemicals . It straightens using hydrolyzed keratin, natural oils, and Pro-Vitamin B5 , which hydrates and repairs while straightening , without damaging the hair.

Why didn't my hair straightening treatment work or why didn't it turn out well?

In 99% of cases, straightening fails because the right iron was not used or the correct temperature was not used .


For the product to activate and seal correctly, it is ESSENTIAL to use:

✅ Iron with 100% TITANIUM plates (not ceramic, not tourmaline, not coated)
✅ Minimum temperature of 230°C (450°F) — always at MAXIMUM power


⚡ If you use our Lizze Extreme iron, it should be set to 250°C

If the temperature is low or the straightener is not titanium, the product will not seal and the hair will not be straight , even if you have done the rest of the process correctly.

Is it safe if I have dyed or bleached hair? Will it fade the color?

Yes, the treatment is suitable for dyed and bleached hair because it contains no formaldehyde or harsh sulfates. Furthermore, it cares for the hair fiber and adds shine , even helping to restore the appearance of chemically processed hair .

How long does the whole process take, and can I do it myself at home?

Yes, it's designed for home use and can be applied in under 90 minutes following the included manual. The step-by-step instructions are designed so that anyone can apply it without prior experience , achieving salon-quality results.

How do you maintain the result so that it lasts longer?

To maintain the straightening treatment for up to 12 weeks , it is recommended to wash your hair 24–48 hours after application using sulfate-free shampoo . This helps keep the keratin sealed and the hair frizz-free for longer.

What happens if the straightening treatment doesn't work for me or doesn't turn out well?

It's very rare for this to happen if you follow the instructions correctly and use a flat iron with 100% titanium plates at 230°C , but we still want you to buy with complete peace of mind. We're so confident in our product that we offer a real guarantee : if you don't get results, we'll give you your money back. No hassle, no fine print.
Straightening Kit | Keratin GoldenHair | without formaldehyde
Straightening Kit | Keratin GoldenHair | without formaldehyde
Straightening Kit | Keratin GoldenHair | without formaldehyde
Straightening Kit | Keratin GoldenHair | without formaldehyde
Straightening Kit | Keratin GoldenHair | without formaldehyde

Straightening Kit | Keratin GoldenHair | without formaldehyde

€79.98
€99.98